from grapho- + -oil + -logie-logy: inference of future production from an oil production profile. The theory underlying graphoilogy is that production profile is an expression of limited oil reserves; hence, a systematic analysis of the way production profiles are shaped can reveal traits of actual ressources.

Hubbert, M. King. (1956)

Monday, August 13, 2007

US Temperature Revision

A few charts showing NASA's revision of the average U.S. temperatures since 1882 (see RealClimate for explanations). The revision has a significant impact on the years 2000-2005. Unfortunately, this event has been grossly distorted by some news media.

Click to Enlarge.

The data before correction is coming from the web.archive.org (see data). Click to Enlarge.

Click to Enlarge.

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Update (2007/08/15):

The data before correction is coming from the web.archive.org (see data). Click to Enlarge.